diff --git a/Cargo.lock b/Cargo.lock
index 4bbbe5ae..97ebc8a6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -740,13 +740,13 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.1.16"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
+checksum = "c05aeb6a22b8f62540c194aac980f2115af067bfe15a0734d7277a768d396b31"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "wasi 0.9.0+wasi-snapshot-preview1",
+ "wasi 0.11.0+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -1046,9 +1046,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.119"
+version = "0.2.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bf2e165bb3457c8e098ea76f3e3bc9db55f87aa90d52d0e6be741470916aaa4"
+checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
 
 [[package]]
 name = "linked-hash-map"
@@ -1519,7 +1519,7 @@ dependencies = [
  "libc",
  "rand_chacha 0.1.1",
  "rand_core 0.4.2",
- "rand_hc 0.1.0",
+ "rand_hc",
  "rand_isaac",
  "rand_jitter",
  "rand_os",
@@ -1530,15 +1530,13 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.7.3"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
- "getrandom",
  "libc",
- "rand_chacha 0.2.2",
- "rand_core 0.5.1",
- "rand_hc 0.2.0",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -1553,12 +1551,12 @@ dependencies = [
 
 [[package]]
 name = "rand_chacha"
-version = "0.2.2"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core 0.5.1",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -1578,9 +1576,9 @@ checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
 
 [[package]]
 name = "rand_core"
-version = "0.5.1"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
  "getrandom",
 ]
@@ -1594,15 +1592,6 @@ dependencies = [
  "rand_core 0.3.1",
 ]
 
-[[package]]
-name = "rand_hc"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
-dependencies = [
- "rand_core 0.5.1",
-]
-
 [[package]]
 name = "rand_isaac"
 version = "0.1.1"
@@ -2661,7 +2650,7 @@ dependencies = [
  "md-5",
  "plist 0.3.0",
  "proptest",
- "rand 0.7.3",
+ "rand 0.8.5",
  "regex 1.5.6",
  "reqwest",
  "semver 1.0.6",
@@ -2765,15 +2754,15 @@ dependencies = [
 
 [[package]]
 name = "wasi"
-version = "0.9.0+wasi-snapshot-preview1"
+version = "0.10.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 
 [[package]]
 name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "widestring"
diff --git a/uvm_core/Cargo.toml b/uvm_core/Cargo.toml
index 4aa51822..bc080faa 100644
--- a/uvm_core/Cargo.toml
+++ b/uvm_core/Cargo.toml
@@ -49,6 +49,6 @@ libc = "0.2.80"
 
 [dev-dependencies]
 proptest = "0.9.4"
-rand = "0.7"
+rand = "0.8"
 stringreader = "0.1.1"
 indoc = "1.0.7"